ませんてっけん

磨穿鉄硯

showing unyielding diligence in one's studies; wearing a hole through one's metal inkstone from constant studying

N3Noun

Noun

showing unyielding diligence in one's studies•wearing a hole through one's metal inkstone from constant studying

Related Kanji

grind, polish, scour, improve, brush (teeth)

マ / みが.く

put on (to the feet), dig, pierce, drill

セン / うが.つ

iron

テツ / くろがね

inkstone

ケン / すずり